Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method for wireless communication comprising: transferring uplink data by an uplink transmitter to a movable object, during a first time slot using one or more frequency channels, the uplink data including operational data to control the movable object and synchronization information for synchronizing data transmission with the movable object; measuring channel quality associated with the one or more frequency channels by a downlink receiver during a second time slot; selecting, during the second time slot, a working frequency channel from the one or more frequency channels according to the measured channel quality associated with the one or more frequency channels, the second time slot not overlapping the first time slot; and receiving downlink data by the downlink receiver from the movable object using the working frequency channel during a third time slot, the third time slot not overlapping the first time slot or the second time slot, the downlink data including image data, location data, or orientation data of the movable object.
This invention relates to wireless communication systems for controlling and receiving data from movable objects, such as drones or unmanned aerial vehicles (UAVs). The system addresses challenges in maintaining reliable communication links with movable objects, particularly in dynamic environments where signal quality can vary due to interference, obstacles, or movement. The method involves a wireless communication process divided into distinct time slots. During a first time slot, an uplink transmitter sends operational control data and synchronization information to the movable object using one or more frequency channels. This data ensures the movable object operates correctly and maintains timing alignment for subsequent transmissions. In a second, non-overlapping time slot, a downlink receiver measures the channel quality of the available frequency channels. Based on these measurements, the system selects an optimal working frequency channel to minimize interference and maximize data throughput. Finally, in a third time slot, the downlink receiver receives downlink data from the movable object, such as image, location, or orientation data, using the selected working frequency channel. The time slots are non-overlapping to prevent interference between uplink and downlink transmissions. This approach improves communication reliability by dynamically adapting to channel conditions while ensuring efficient data exchange between the movable object and the ground station.
2. The method of claim 1 , wherein: the first time slot includes one or more first subframes of a time division multiplexing (TDM) frame; the second time slot includes one or more second subframes of the TDM frame; and the third time slot includes one or more third subframes of the TDM frame.
This invention relates to time division multiplexing (TDM) communication systems, specifically improving resource allocation in TDM frames. The problem addressed is inefficient use of TDM subframes, leading to suboptimal bandwidth utilization and potential interference between different communication channels. The method involves dividing a TDM frame into distinct time slots, each containing one or more subframes. A first time slot includes one or more first subframes, a second time slot includes one or more second subframes, and a third time slot includes one or more third subframes. These time slots are used to allocate resources for different communication channels or services, ensuring that each channel operates within its designated subframes without overlapping or interfering with others. This structured allocation allows for better synchronization, reduced interference, and more efficient bandwidth management in TDM-based communication systems. The method can be applied in various TDM applications, including wireless communication, wired networks, and other systems requiring precise time-based resource partitioning.
3. The method of claim 2 , wherein a number of the one or more third subframes is greater than a number of the one or more first subframes.
This invention relates to wireless communication systems, specifically to methods for managing subframe allocation in a time-division duplex (TDD) network. The problem addressed is optimizing the distribution of subframes to improve efficiency and reduce interference in TDD-based communications. The method involves dynamically allocating subframes within a frame structure, where the frame includes multiple subframes divided into at least three categories: first subframes, second subframes, and third subframes. The first subframes are used for downlink transmissions, the second subframes are used for uplink transmissions, and the third subframes are used for special purposes, such as switching between uplink and downlink or for guard periods. The key aspect of this invention is that the number of third subframes is greater than the number of first subframes, allowing for more flexible transitions between uplink and downlink modes. This configuration helps mitigate interference and improves synchronization in TDD systems, particularly in scenarios where rapid switching between uplink and downlink is required. The method ensures efficient use of available resources while maintaining reliable communication links.
4. The method of claim 1 , wherein the uplink data includes control information for controlling operations and/or state of the movable object.
The invention relates to a system for managing uplink data transmission in a communication network involving a movable object, such as a drone or autonomous vehicle. The core problem addressed is the efficient and reliable transmission of control information alongside other data types to ensure the movable object operates correctly and maintains its intended state. The system involves a transmitter that sends uplink data to the movable object. This uplink data comprises not only general payload data but also specific control information. The control information is critical as it dictates the operations and state adjustments of the movable object, such as adjusting its trajectory, speed, or operational mode. By embedding this control information within the uplink data, the system ensures that the movable object receives real-time instructions necessary for its autonomous or semi-autonomous functions. The control information may include commands for initiating, modifying, or terminating specific actions, as well as status updates that reflect the current operational state of the movable object. This integration of control data within the uplink stream allows for a streamlined communication process, reducing latency and improving the responsiveness of the movable object to external commands or environmental changes. The system is designed to handle dynamic and potentially unpredictable conditions, ensuring that the movable object remains under precise control throughout its operation.
5. The method of claim 1 , wherein the synchronization information is used for synchronizing transmission of at least one of the uplink data or the downlink data, and includes timing information indicating the first time slot, the second time slot, and the third time slot.
The invention relates to a wireless communication system that synchronizes data transmission between a base station and a user device. It addresses the problem of coordinating uplink and downlink data transfers in a time-division duplex (TDD) system where multiple time slots are used for communication. The system uses synchronization information to align the timing of data transmission between the base station and the user device. This synchronization information includes timing details for three distinct time slots: a first time slot for uplink data transmission from the user device to the base station, a second time slot for downlink data transmission from the base station to the user device, and a third time slot for additional synchronization or data transfer. By providing precise timing information for these slots, the system ensures that uplink and downlink transmissions are properly aligned, reducing interference and improving communication efficiency. The synchronization information may be embedded in control signals or transmitted separately to facilitate accurate timing coordination between the base station and the user device.
6. The method of claim 1 , wherein measuring the channel quality of the one or more frequency channels includes measuring characteristics associated with a current electromagnetic environment associated with the one or more frequency channels.
The invention relates to a method for assessing the quality of frequency channels in a wireless communication system by evaluating the electromagnetic environment. The core process involves measuring characteristics of the current electromagnetic environment for one or more frequency channels to determine their suitability for communication. This includes analyzing factors such as interference levels, signal strength, noise, and other environmental conditions that may affect transmission quality. By dynamically assessing these characteristics, the method enables adaptive selection of optimal frequency channels for improved communication performance. The approach ensures that the chosen channels can support reliable data transmission by accounting for real-time electromagnetic conditions, which may vary due to external factors like other wireless devices, environmental noise, or physical obstructions. The solution addresses the challenge of maintaining high-quality communication in dynamic and potentially congested electromagnetic environments, where traditional static channel selection methods may fail to provide optimal performance.
7. The method of claim 6 , wherein measuring the characteristics associated with the current electromagnetic environment associated with the one or more frequency channels includes measuring at least one of noise, interference, signal-to-noise ratio, bit error rate, or fading rate associated with the one or more frequency channels.
A method for assessing the electromagnetic environment in wireless communication systems by measuring key performance metrics of frequency channels to optimize channel selection and signal quality. The invention involves evaluating one or more frequency channels by quantifying noise levels, interference, signal-to-noise ratio (SNR), bit error rate (BER), or fading rate. These measurements provide real-time data on the electromagnetic conditions affecting signal transmission, enabling adaptive adjustments to improve communication reliability and efficiency. By analyzing these characteristics, the system can dynamically select the most suitable frequency channels for data transmission, reducing errors and enhancing overall network performance. The approach supports dynamic spectrum management in environments with varying electromagnetic interference, ensuring robust and efficient wireless communication.
8. The method of claim 1 , wherein the downlink data includes at least one of image data or sensor data acquired by the movable object or a device in communication with the movable object.
A system for transmitting downlink data from a movable object to a ground station or remote receiver, where the downlink data consists of either image data captured by a camera mounted on the movable object or sensor data collected by onboard sensors or devices in communication with the movable object. The system is designed to handle real-time or near-real-time data transmission, ensuring efficient delivery of visual or telemetry information for monitoring, analysis, or control purposes. The movable object may be an unmanned aerial vehicle (UAV), autonomous robot, or other remotely operated device equipped with data acquisition capabilities. The downlink data is transmitted wirelessly, leveraging existing communication protocols to maintain connectivity during movement. The inclusion of image or sensor data in the downlink stream supports applications such as aerial surveillance, environmental monitoring, or industrial inspection, where timely data retrieval is critical. The system may incorporate compression techniques to optimize bandwidth usage and reduce latency, ensuring that the transmitted data remains usable despite potential network constraints.
9. The method of claim 1 , further comprising: encoding the uplink data using a first coding scheme; and decoding the downlink data using a decoding scheme corresponding to a second coding scheme different from the first coding scheme.
The invention relates to wireless communication systems, specifically addressing the challenge of optimizing data transmission between a base station and a user device by employing different coding schemes for uplink and downlink data. The system encodes uplink data sent from the user device to the base station using a first coding scheme, which may prioritize error resilience or efficiency for the uplink direction. Simultaneously, downlink data transmitted from the base station to the user device is decoded using a second coding scheme, distinct from the first, tailored to the downlink's specific requirements, such as higher throughput or lower latency. This dual-coding approach allows the system to adapt to varying channel conditions or performance demands in each direction, improving overall communication reliability and efficiency. The method ensures that the encoding and decoding processes are optimized independently for uplink and downlink, leveraging the strengths of each coding scheme to enhance data integrity and transmission speed. By using different coding schemes, the system can mitigate interference, reduce decoding errors, and better accommodate asymmetric traffic patterns common in modern wireless networks.
10. The method of claim 9 , wherein the second coding scheme is more efficient than the first coding scheme.
This invention relates to data compression techniques, specifically improving coding efficiency in systems that use multiple coding schemes. The problem addressed is the inefficiency of using a single coding scheme for all data, as different data types or patterns may be better suited to different compression methods. The invention provides a method for selecting between at least two coding schemes, where the second coding scheme is more efficient than the first for certain data. The method involves analyzing input data to determine its characteristics, then dynamically selecting the more efficient coding scheme based on those characteristics. The selection process may involve comparing the compression ratios or computational costs of the available schemes. The invention ensures that the most efficient coding scheme is applied to the data, optimizing storage or transmission resources. The method can be applied in various systems, including data storage, communication networks, or multimedia processing, where efficient compression is critical. The invention improves upon prior art by dynamically adapting the coding scheme to the data, rather than relying on a fixed, potentially suboptimal method.
11. The method of claim 1 , further comprising: modulating the uplink data using a first modulation scheme; and demodulating the downlink data using a demodulation scheme corresponding to a second modulation scheme different from the first modulation scheme.
This invention relates to wireless communication systems, specifically methods for managing uplink and downlink data transmission with different modulation schemes. The problem addressed is the need for efficient and flexible modulation techniques to optimize data transmission in varying channel conditions. The method involves transmitting uplink data from a user device to a base station using a first modulation scheme, such as QAM (Quadrature Amplitude Modulation) or PSK (Phase Shift Keying). Simultaneously, downlink data is received from the base station using a demodulation scheme that corresponds to a second modulation scheme, which differs from the first. This allows the system to adapt to different signal quality conditions, improving overall communication efficiency. The first modulation scheme may be selected based on factors like uplink channel quality, while the second modulation scheme is chosen based on downlink channel conditions. This approach ensures that both uplink and downlink transmissions are optimized independently, enhancing data throughput and reliability. The method may also include adjusting the modulation schemes dynamically in response to real-time channel conditions, further improving performance. This technique is particularly useful in scenarios where uplink and downlink channels experience different levels of interference or signal degradation.
12. The method of claim 11 , wherein the second modulation scheme is higher-order than the first modulation scheme.
A method for wireless communication involves transmitting data using a first modulation scheme and then switching to a second modulation scheme that is higher-order than the first. The first modulation scheme is used to transmit a first portion of data, while the second modulation scheme, which provides higher data rates but may be more susceptible to errors, is used to transmit a second portion of the data. The method includes determining a channel condition, such as signal-to-noise ratio (SNR), and selecting the modulation schemes based on this condition. If the channel condition is favorable, the higher-order modulation scheme is used to maximize throughput. If the channel condition is poor, the lower-order modulation scheme is used to ensure reliable transmission. The method may also involve dynamically adjusting the modulation schemes during transmission to adapt to changing channel conditions. This approach balances data rate and reliability in wireless communication systems.
13. The method of claim 1 , further comprising: measuring a quality of the downlink data.
A system and method for wireless communication involves monitoring and optimizing data transmission in a network. The technology addresses the challenge of ensuring reliable and efficient data delivery in wireless environments, where signal interference, congestion, or other factors can degrade performance. The method includes transmitting downlink data from a base station to a user device, where the downlink data is divided into multiple segments. Each segment is encoded with redundancy to allow for error correction and recovery if transmission errors occur. The system dynamically adjusts transmission parameters, such as modulation and coding schemes, based on real-time channel conditions to improve data throughput and reliability. Additionally, the method includes measuring the quality of the downlink data to assess transmission performance. This measurement may involve evaluating metrics like signal strength, error rates, or latency to determine if adjustments are needed. The system may also prioritize certain data segments for transmission based on their importance or urgency, ensuring critical information is delivered first. By continuously monitoring and adapting to network conditions, the method enhances data transmission efficiency and reliability in wireless communication systems.
14. A terminal comprising: an uplink transmitter configured to transfer uplink data to a movable object during a first time slot using one or more frequency channels, the uplink data including operational data to control the movable object and synchronization information for synchronizing data transmission with the movable object; and a downlink receiver configured to: measure channel quality associated with the one or more frequency channels during a second time slot; select, during the second time slot, a working frequency channel from the one or more frequency channels according to the measured channel quality associated with the one or more frequency channels, the second time slot not overlapping the first time slot; and receive downlink data from the movable object using the working frequency channel during a third time slot, the third time slot not overlapping the first time slot or the second time slot, and the downlink data including image data, location data, or orientation data of the movable object.
This invention relates to wireless communication systems for controlling and receiving data from movable objects, such as drones or unmanned aerial vehicles (UAVs). The system addresses challenges in maintaining reliable communication links while ensuring efficient data transfer between a ground-based terminal and the movable object. The terminal includes an uplink transmitter that sends operational control commands and synchronization signals to the movable object during a designated time slot using one or more frequency channels. A downlink receiver measures the quality of these frequency channels during a separate time slot, selects the best-performing channel based on the measurements, and then receives data—such as images, location, or orientation information—from the movable object during another non-overlapping time slot. The time-division approach ensures that uplink control and downlink data transmission do not interfere with each other, improving communication reliability. The system dynamically adapts to channel conditions by selecting the optimal frequency channel for downlink reception, enhancing data transfer efficiency and stability. This method is particularly useful in applications requiring real-time monitoring and control of movable objects in dynamic environments.
15. The terminal of claim 14 , wherein: the first time slot includes one or more first subframes of a time division multiplexing (TDM) frame; the second time slot includes one or more second subframes of the TDM frame; and the third time slot includes one or more third subframes of the TDM frame.
This invention relates to a terminal device configured for time division multiplexing (TDM) communication, addressing the challenge of efficiently managing multiple communication channels within a single TDM frame. The terminal includes a transceiver that operates in three distinct time slots: a first time slot for transmitting data, a second time slot for receiving data, and a third time slot for performing other functions such as synchronization or control signaling. Each time slot is composed of one or more subframes within a TDM frame, allowing flexible allocation of time resources for different communication tasks. The terminal dynamically adjusts the subframe assignments within the TDM frame to optimize performance based on traffic conditions, ensuring efficient use of bandwidth and minimizing interference. This approach enhances reliability and throughput in TDM-based communication systems by structuring transmissions and receptions into dedicated subframes, reducing collisions and improving synchronization. The terminal's ability to partition the TDM frame into configurable subframes enables adaptability to varying communication demands, making it suitable for applications requiring dynamic resource allocation.
16. The terminal of claim 15 , wherein a number of the one or more third subframes is greater than a number of the one or more first subframes.
This invention relates to wireless communication systems, specifically improving data transmission efficiency in time-division duplex (TDD) networks. The problem addressed is the imbalance between uplink and downlink subframe allocations in TDD systems, which can lead to inefficient resource utilization and degraded performance. The solution involves dynamically adjusting the number of subframes allocated for uplink and downlink transmissions to better match traffic demands. The system includes a terminal configured to receive downlink data in one or more first subframes and transmit uplink data in one or more second subframes. Additionally, the terminal is configured to transmit or receive data in one or more third subframes, which are dynamically allocated based on current traffic conditions. The number of third subframes is greater than the number of first subframes, allowing for more flexible resource allocation. The terminal also includes a processor to determine the allocation of these subframes and a transceiver to handle the data transmission and reception. The dynamic allocation mechanism ensures that resources are used more efficiently, reducing latency and improving overall system performance. This approach is particularly useful in scenarios where uplink and downlink traffic demands are asymmetric, such as in video streaming or cloud computing applications.
17. The terminal of claim 14 , wherein: the movable object is an unmanned aerial vehicle (UAV); the terminal is a remote controller of the UAV; and the uplink data includes control information for controlling operations and/or state of the UAV.
This invention relates to a terminal device for communicating with an unmanned aerial vehicle (UAV). The terminal acts as a remote controller, transmitting uplink data to the UAV to control its operations and state. The system includes a communication module for sending and receiving data, a processing module for handling data transmission, and a user interface for inputting control commands. The terminal ensures reliable communication with the UAV, allowing real-time adjustments to flight parameters, navigation, and other operational functions. The invention addresses the need for efficient, low-latency control of UAVs, particularly in applications requiring precise maneuvering or autonomous operation. The terminal may also receive downlink data from the UAV, such as telemetry or sensor readings, to provide feedback for further control adjustments. The design prioritizes stability and responsiveness, ensuring seamless interaction between the remote controller and the UAV. This technology is applicable in industries like drone delivery, aerial surveillance, and autonomous flight systems.
18. The terminal of claim 14 , wherein the synchronization information is used for synchronizing transmission of at least one of the uplink data or the downlink data, and includes timing information indicating the first time slot, the second time slot, and the third time slot.
This invention relates to wireless communication systems, specifically improving synchronization between a terminal and a base station for uplink and downlink data transmission. The problem addressed is ensuring precise timing alignment to avoid interference and optimize resource utilization in time-division duplex (TDD) or other time-scheduled communication schemes. The terminal includes a synchronization module that receives synchronization information from a base station. This information contains timing details for multiple time slots, including a first time slot for uplink data transmission, a second time slot for downlink data reception, and a third time slot for either uplink or downlink transmission based on system requirements. The synchronization module adjusts the terminal's transmission and reception timing according to these slots to maintain alignment with the base station's schedule. The synchronization information may also include frame structure details, such as the duration and boundaries of each time slot, to ensure the terminal correctly interprets the timing plan. This allows the terminal to dynamically switch between uplink and downlink operations without conflicts, improving efficiency and reducing latency. The system is particularly useful in scenarios where communication channels are shared between multiple devices or when rapid switching between transmission directions is required.
19. The terminal of claim 14 , wherein: the downlink receiver is further configured to transmit information about the working frequency channel to the uplink transmitter; and the uplink transmitter is further configured to transmit the information about the working frequency channel to the movable object.
This invention relates to wireless communication systems for movable objects, such as drones or unmanned aerial vehicles (UAVs), addressing the challenge of maintaining reliable communication links across varying frequency channels. The system includes a terminal with a downlink receiver and an uplink transmitter. The downlink receiver is configured to receive signals from a movable object, such as a UAV, and determine the optimal working frequency channel for communication. The uplink transmitter then sends data to the movable object using this selected frequency channel. Additionally, the downlink receiver can transmit information about the working frequency channel to the uplink transmitter, which in turn relays this information to the movable object. This ensures that both the terminal and the movable object are synchronized on the same frequency channel, improving communication reliability and efficiency. The system may also include a frequency channel selector that dynamically adjusts the working frequency channel based on environmental conditions or signal quality, further enhancing communication stability. The invention is particularly useful in applications where stable and adaptive communication links are critical, such as in drone operations or remote sensing.
20. A computer-readable storage medium storing a computer program that, when executed by one or more processors, cause the one or more processors to: transfer uplink data by an uplink transmitter to a movable object during a first time slot using one or more frequency channels, the uplink data including operational data to control the movable object and synchronization information for synchronizing data transmission with the movable object; measure channel quality by a down link receiver associated with the one or more frequency channels during a second time slot; select, during the second time slot, a working frequency channel from the one or more frequency channels according to the measured channel quality associated with the one or more frequency channels, the second time slot not overlapping the first time slot; and receive downlink data by the downlink receiver from the remote terminal using the working frequency channel during a third time slot, the third time slot not overlapping the first time slot or the second time slot, and the downlink data including image data, location data, or orientation data of the movable object.
This invention relates to wireless communication systems for controlling and receiving data from movable objects, such as drones or unmanned aerial vehicles (UAVs). The system addresses challenges in maintaining reliable communication links with movable objects, particularly in dynamic environments where signal interference or degradation can occur. The invention provides a method for efficient data transmission and reception using time-division multiplexing and adaptive frequency channel selection. The system includes an uplink transmitter that sends operational control data and synchronization information to a movable object during a first time slot using one or more frequency channels. A downlink receiver measures channel quality during a second time slot, which does not overlap with the first time slot, to assess signal conditions across the available frequency channels. Based on the measured channel quality, the system selects an optimal working frequency channel for downlink communication. During a third time slot, which does not overlap with the first or second time slots, the downlink receiver receives data from the movable object using the selected working frequency channel. The received downlink data may include image data, location data, or orientation data of the movable object. This approach ensures efficient and reliable communication by dynamically adapting to changing channel conditions while avoiding interference between uplink and downlink transmissions. The time-division multiplexing and adaptive frequency selection improve data transmission stability and performance in wireless communication systems for movable objects.
Unknown
December 29, 2020
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